Dual drive screw head



FIG. 1 is a top, right, front perspective view of a dual drive screw head showing our new design;

FIG. 2 is a bottom, left front perspective view of the dual drive screw head of FIG. 1;

FIG. 3 is a front elevation view of the dual drive screw head of FIG. 1, the rear elevation view being a mirror image thereof;

FIG. 4 is a right side elevation view of the dual drive screw head of FIG. 1, the left side elevation view being a mirror image thereof;

FIG. 5 is a top plan view of the dual drive screw head of FIG. 1; and,

FIG. 6 is a bottom plan view of the dual drive screw head of FIG. 1.

The broken lines showing portions of the design in all figures are included for the purpose of illustrating environment and unclaimed features and forms not part of the claimed design.

The long-short segment broken line indicates a boundary line and the area with in the boundary line forms no part of the claimed design. 

CLAIM The ornamental design for a dual drive screw head, as shown and described. 